Floor-cleaning machine with improved brush pressure control

Details Floor-cleaning machine with improved brush pressure control Floor-cleaning machine with improved brush pressure control

1990-04-03

1991-09-17

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Machines

Brushing

51177, A47L 11162

Patent

active

050481410

ABSTRACT:
An automatic floor-cleaning and floor-treating machine having improved brush-pressure control. The machine includes a body which is supported on wheels and a frame which is pivotally mounted with respect to the body. At least one rotating brush is mounted on one lateral side of the frame with respect to the pivot axis. The other lateral side of the frame with respect to the pivot axis is connected to one end of a spring. The other end of the spring can be displaced by operation of a motor. A second spring is provided which is connected at one end to the displaceable end of the first spring and at the other end to the frame on the side where the rotating brush is mounted. Preferably, the attachment site of the first spring to the second spring is connected to the actuator arm of a servomotor.

REFERENCES:
patent: 3436788 (1969-04-01), Tamny
patent: 4674142 (1987-06-01), Meili
patent: 4729141 (1988-03-01), Berg et al.
patent: 4731956 (1988-03-01), Wood

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